The Maria Theresa thaler

Thaler

The Thaler was a silver coin used throughout Europe for almost four hundred years. Its name lives on in various currencies as the dollar or tolar. Etymologically, "Thaler" is an abbreviation of "Joachimsthaler", a coin type from the city of Joachimsthal in Bohemia, where some of the first such...

(MTT) is a silver

Silver

Silver is a metallic chemical element with the chemical symbol Ag and atomic number 47. A soft, white, lustrous transition metal, it has the highest electrical conductivity of any element and the highest thermal conductivity of any metal...

 bullion-

Bullion coin

A bullion coin is a coin struck from precious metal and kept as a store of value or an investment, rather than used in day-to-day commerce. Investment coins are generally coins that have been minted after 1800, have a purity of not less than 900 thousandths and are or have been a legal tender in...

coin

Coin

A coin is a piece of hard material that is standardized in weight, is produced in large quantities in order to facilitate trade, and primarily can be used as a legal tender token for commerce in the designated country, region, or territory....

 that has been used in world trade

Trade coin

Trade coins are coins minted by a government, but not necessarily current within the territory of the issuing country. These quasi bullion coins were thus actually export goods - that is, bullion in the form of coins, used to bulk buy important goods from other countries, where they could be...

 continuously. Maria Theresa Thalers were first minted in 1741, using the then Reichsthaler standard of 9 thalers to the Vienna mark. In 1750 the thaler was debased to 10 thalers to the Vienna Mark (a weight approximating a pound of fine silver). The following year the new standard was effectively adopted across the German speaking world when that standard was accepted formally in the Bavarian monetary convention.